tensile stress
compressive stress
shear stress
bending stress
✅ The correct answer is option C.
Mechanical Engineering MCQs
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is
μ W cosec α (r1 + r2)
μ W cosec α (r1 + r2)
μ W cosec α
μ W cosec α
✅ The correct answer is option A.
Which of the following statement is correct about hot machining?
It requires less power than machining metals at room temperature.
The rate of tool wear is lower.
It is used for machining high strength and high temperature resistant materials.
all of the above
✅ The correct answer is option D.
The temperature rise, between the condenser outlet and expansion valve in ammonia vapour compression system, should be as low as possible.
Yes
No
✅ The correct answer is option A.
The instantaneous centres which vary with the configuration of mechanism, are called
permanent instantaneous centres
fixed instantaneous centres
neither fixed nor permanent instantaneous centres
none of the above
✅ The correct answer is option C.
According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then
their algebraic sum is zero
their lines of action are at equal distances
the algebraic sum of their moments about any point in their plane is zero
the algebraic sum of t
✅ The correct answer is option C.
The centre of percussion is below the centre of gravity of the body and is at a distance equal to
h/kG
h2/kG
kG2/h
h x kG
✅ The correct answer is option C.
The two rolls in a two high rolling mills are of __________ size.
equal
different
✅ The correct answer is option A.
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is
248 cm3
252 cm3
264 cm3
286 cm3
✅ The correct answer is option C.
Surface tension force is the product of surface tension per unit length and cross-sectional area of flow.
Correct
Incorrect
✅ The correct answer is option B.